Appox. usage (any sense): 12.5 per million words
Appox. usage (any sense): 7.96 per million words
Appox. usage (any sense): 0.772 per million words
Appox. usage (any sense): 0.159 per million words
Appox. usage (any sense): 0.06 per million words
Appox. usage (any sense): less than 0.1 per million words